Ockley is a small village in the south of Surrey and home to Vann Lake. This eight-acre man-made lake is thought to date from the mid-18th century, when a forest gill was dammed to form a ‘hammer pond’ to power a mill that was never built. It is surrounded by Ockley Woods, a 57.8-hectare (143-acre) ancient woodland and a biological Site of Special Scientific Interest.